| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every few days | 13 |
8.7%
|
| 2 | Every few weeks | 36 |
24%
|
| 3 | Every few months | 43 |
28.7%
|
| 4 | Not at all | 57 |
38%
|
| -99 | 1 |
0.7%
|
|
| Sysmiss | 15 |